Gross, 30, hit .227/.326/.355 in 326 plate appearances for the Rays last year, logging 638.6 innings in right field. He has experience at the other two outfield positions, and Susan Slusser of the San Francisco Chronicle feels he's the favorite for Oakland's fourth outfielder job. Gross has struggled mightily against lefties in his career; he's hit 242/.338/.409 against righties the last three years.